Coins were an important part of the Ptolemaic economy.  Because Gold and Silver was not very practical for everyday use at the local market for buying bread or wine, a coin to make change was needed. The early Ptolemies controlled the richest copper source of the ancient world- the island of Cyprus. The Ptolemies would issue insanely large denominations in Bronze. True to the character of the dynasty - go big or go home. ••• Head of Zeus Ammon with a large eagle reverse. •